428013667 has 2 divisors, whose sum is σ = 428013668. Its totient is φ = 428013666.

The previous prime is 428013661. The next prime is 428013689. The reversal of 428013667 is 766310824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428013667 - 2²⁷ = 293795939 is a prime.

It is not a weakly prime, because it can be changed into another prime (428013661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214006833 + 214006834.

It is an arithmetic number, because the mean of its divisors is an integer number (214006834).

Almost surely, 2^428013667 is an apocalyptic number.

428013667 is a deficient number, since it is larger than the sum of its proper divisors (1).

428013667 is an equidigital number, since it uses as much as digits as its factorization.

428013667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 428013667 is about 20688.4911726303. The cubic root of 428013667 is about 753.6202257632.

The spelling of 428013667 in words is "four hundred twenty-eight million, thirteen thousand, six hundred sixty-seven".